From f3bd00c0168abaf13ac0733a77bc1106d3f6720d Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Mon, 20 Nov 2017 17:57:46 -0500 Subject: [PATCH] Add support for Motorola 88K to s_lock.h. Apparently there are still people out there who care about this old architecture. They probably care about dusty versions of Postgres too, so back-patch to all supported branches. David Carlier (from a patch being carried by OpenBSD packagers) Discussion: https://postgr.es/m/CA+XhMqzwFSGVU7MEnfhCecc8YdP98tigXzzpd0AAdwaGwaVXEA@mail.gmail.com --- src/include/storage/s_lock.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h index 99e109853f..35088db10a 100644 --- a/src/include/storage/s_lock.h +++ b/src/include/storage/s_lock.h @@ -543,6 +543,30 @@ tas(volatile slock_t *lock) #endif /* (__mc68000__ || __m68k__) && __linux__ */ +/* Motorola 88k */ +#if defined(__m88k__) +#define HAS_TEST_AND_SET + +typedef unsigned int slock_t; + +#define TAS(lock) tas(lock) + +static __inline__ int +tas(volatile slock_t *lock) +{ + register slock_t _res = 1; + + __asm__ __volatile__( + " xmem %0, %2, %%r0 \n" +: "+r"(_res), "+m"(*lock) +: "r"(lock) +: "memory"); + return (int) _res; +} + +#endif /* __m88k__ */ + + /* * VAXen -- even multiprocessor ones * (thanks to Tom Ivar Helbekkmo)